A woman is detained at La Conciergerie. She's 37 but her hair are already white. She's suffering from terrible haemorraghe. Her name is Marie-Antoinette of Lorraine, from Austria, and she's living her last four days.

An aging agent is called back by "the Company" to run a hostage trade of a Soviet spy for an American agent.

From his locksmith's shop, a simple guy dreams of becoming a crime boss, at the wheel of his Cadillac surrounded by blonde bimbos. He starts small, assassinating petty criminals. Gaining renown in the newspapers as "Le Furet" (The Ferret), he soon sets his sights higher. The police and organized crime both take up the chase.

A con artist couple takes a young, handsome petty thief under their wing, but jealousies flare when the woman develops an interest in him.

After being released from prison, a burglar is convinced by a former accomplice to participate in the theft of a precious jewel belonging to a rich heiress.

To honour the 40th anniversary of her death, multiple personalities share their feelings and thoughts about the life and career of the fabulous and bold actress Romy Schneider. Among them, Alain Delon, icon of French cinema and Romy's first great love, reads her the love letter which he wrote her forty years ago, the day after she passed away.

The oddest things come in pairs. In 1989, there were two foreign films on the market whose titles translated to Errors of Youth or Youthful Indiscretion. One was a Russian film, the other was a French picture, originally titled Erreur de Jeunesse. In this one, would-be poet Francis Frappat breezes through a number of relationships. Of paramount importance to Frappat are his attempts to seduce the lovely Géraldine Danon.

Ulysses, an idealistic, novice film director, invites Clothilde, his young and pretty neighbor, to accompany him to the Love Film Festival on Réunion Island, where his debut film has been selected. Unfortunately, the day before they're due to leave, Ulysses learns that his film has been removed from the program. Afraid of disappointing Clotilde, he hides the truth and flies with her to Réunion, determined to do everything in his power to get his film back in the official selection and, at the same time, win the favors of the young woman, who dreams of becoming an actress. But Ulysses must cope with internal rivalries and struggles behind the scenes if he wants love and cinema to triumph.